...expanded at their ends into sinuous steel boxes known as " headers." The tubes are thus staggered. Extending across the front of the boiler and connected to the upper ends of the front headers by short tubes is a horizontal steam and water drum of ample dimensions. As the upper...

...a continuous circulation in one direction are placed at an inclination of 15° with the horizontal. Extending across the front of the boiler and connected...4-inch tubes is a horizontal steam and water drum. As the upper ends of the rear headers are also connected to this drum by horizontal 4-inch tubes each...

...expanded at their ends into sinuous steel boxes known as " headers ". The tubes are thus staggered. Extending across the front of the boiler, and connected to the upper ends of the front headers by short tubes, is a horizontaljsteam and water drum of ample dimensions. As the upper...

...burning oil. casing; prevent the adherence of clinkers, and are of sufficient thickness to withstand the wear and tear of the fire tools. Extending across...boiler and connected to the upper ends of the headers is a horizontal steam and water drum of ample dimensions. As the upper ends of the rear headers are...

...expanded at their ends into sinuous steel boxes known as " headers." The tubes are thus staggered. Extending across the front of the boiler, and connected to the upper ends of the front headers by short tubes, is a horizontal steam and water drum of ample dimensions. As the upper...

...expanded at their ends into sinuous steel boxes known as “headers.” The tubes are thus staggered. Extending across the front of the boiler and connected to the upper ends of the front headers by short tubes is a horizontal steam and water drum. As the upper ends of the rear headers...